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Home Civil Engineering Irrigation Comments

  • Question
  • The main cause of silting up a channel,


  • Options
  • A. non-regime section
  • B. inadequate slope
  • C. defective head regulator
  • D. defective outlets
  • E. all the above.

  • Correct Answer
  • all the above. 


  • Irrigation problems


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    • 1. Regime conditions in a channel may occur if

    • Options
    • A. discharge is constant
    • B. channel flows uniformly in incoherent alluvium as that transported in suspension
    • C. silt grade and silt charge are constant
    • D. all the above.
    • Discuss
    • 2. Meandering of a river generally occurs, in

    • Options
    • A. rocky stage
    • B. delta stage
    • C. boulder stage
    • D. trough stage.
    • Discuss
    • 3. A hydraulic jump is generally formed when a stream moving with

    • Options
    • A. a hyper-critical velocity meets a stream moving with a critical velocity
    • B. a hyper-critical velocity meets a stream moving with a hyper-critical velocity
    • C. A hyper-critical velocity meets a stream moving with a sub-critical velocity
    • D. a sub-critical velocity meets a stream moving with a hyper-critical velocity.
    • Discuss
    • 4. The sensitivity of a rigid module, is

    • Options
    • A. 2.00
    • B. 1.50
    • C. 1.00
    • D. 0.50
    • E. zero
    • Discuss
    • 5. The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called

    • Options
    • A. syphon
    • B. super passage
    • C. aqueduct
    • D. super-aqueduct
    • E. syphon aqueduct.
    • Discuss
    • 6. The optimum depth of kor watering for a rice crop, is

    • Options
    • A. 23.0 cm
    • B. 19.0 cm
    • C. 17.5 cm
    • D. 13.5 cm
    • E. 12.0 cm
    • Discuss
    • 7. Bligh's theory of seepage assumes

    • Options
    • A. equal weightage to the horizontal and vertical creep
    • B. more weightage to horizontal creep than vertical creep
    • C. less weightage to horizontal creep than vertical creep
    • D. loss of head follows the sine curve.
    • Discuss
    • 8. In north Indian Plains, optimum depth of kor watering for wheat, is

    • Options
    • A. 23.0 cm
    • B. 19.0 cm
    • C. 17.5 cm
    • D. 13.5 cm
    • E. 12.0 cm
    • Discuss
    • 9. If ? is the depth of water in metres, B is the number of days of base period and D is the duty in hactare/cumec, the relationship which holds good, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. none of these.
    • Discuss
    • 10. Canals taken off from ice-fed perennial rivers, are known

    • Options
    • A. permanent canals
    • B. ridge canals
    • C. perennial canals
    • D. inundation canals
    • E. ice canals.
    • Discuss


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